Winding and setting mechanism for watches.



PA'ITIN'IBD AUG. 29, 1905.

. G. G. PERRIN. WINDING AND SETTING MECHANISM FOR WATCHES.

APPLICATION FILED OCT. 22. 1904.

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s, msuwcvow c c LNDHEW a mama so UNITED PATENT OFFICE.

WINDING AND SETTING MECHANISM FOR WATCHES.

Application filed October 22,1904. Serial No. 229,673. i f;

To all whom it may concern.-

Be it known that l, CHARLns GLAUsER PER- RIN, watch manufacturer, acitizen of Switzerland, residing at Le Locle, Canton of Neuchatel, Switzerland, have invented new and useful Improvements in Winding and Setting Mechanism, of which the following is a specification. I

In the accompanying drawings, Figure 1 is a view in partial elevation and section of one form of the present invention; Fig. 2, a plan of the winding-stem, the rim of the case with its pendant and crown-stem being removed; and Fig. 3, a partial elevation of a slightlymodih'ed form of the invention.

On the main plate a a lever cis pivoted at b. The lower end cl of this lever acts on the pivoted lever 11, which actuates the sliding pinion f. while the upper end is formed as a nose g, placed near the end of the windingstem it, nearly perpendicularly to the stem and passing over the outer circumference of the plate a.

The crown-stem t',which is firmly connected with the winding-knob Z0, is adjusted loosely in the pendant Z,which is soldered to the rim of the case. The longitudinal play of the stem is simply limited bya small screw a, fixed to the pendant Z and projecting into a groove 0 in the crown-stem e'. The end of crown-stem e' normally rests just above the nose g of the lever 0, the nose 9 forming an inclined plane.

A spring 19, acting beneath the pivoted lever 6, has a tendency to keep the sliding pinion f in permanent contact with the windingpinion q by means of the teeth a on the respective pinions. The action of the spring p extends to the lever 0, the end (Z of which has a constant tendency to ascend under the action of the pivoted lever e, the effect of which is to cause the nose 9 of the lever 0 to rest in close proximity to the winding-stem 7t, as shown in fully-drawn lines in the drawings. In this position if the winding knob Z; be turned the mainspring is wound through the medium of the winding-pinion g.

If the winding-knob 7t be pressed inward, the lower end of the stem a acts on the nose g of the lever 0, the end of which is lowered and presses down the pivoted lever e, thus lowering the sliding pinion f, which engages with the motion work-wheel 8, the parts thus being in the position forsetting the watch, as shown by dotted lines in Fig. 1. This position is assured by the fact that the crown- Speeification of Letters Patent.

Patented Aug. 29, 1905.

stem 7; is clamped between the winding-stem it and the lower part of the nose If the winding-knob be released, the different parts of the mechanism resume their first position, that for the winding under the action of the spring 79.

The movement of the sliding pinion can be reversed in relation to that of the crownstem-that is to say, that if the winding-knob be pushed in the sliding pinion may be put in contact with the winding-pinion and if it be forced out the sliding pinion engages with the motion wheel-work. For this purpose it is only necessary to arrange the lever actuated by the crown-stem so thatthe nose of the lever is on the side opposite to that in Figs. 1 and 2, as shown in Fig. 3 of the drawings. The lever may, moreover, be arranged on either side of the winding-stem, provided that the nose of the lever be placed very near the stem and that it can be operated by the end of the crown-stem.

Winding and setting mechanism of this kind is extremely simple, sure in action, and very easily regulated. It entirely dispenses with the spring device contained in the pendant in what is termed negative-winding mechan isma device which is expensive and troublesome to regulate.

The nose-lever c, operated by the end of the crown-stem, can effect the winding and setting through the medium of other parts than the pivoted lever c and the sliding pinion described above and illustrated as an example of the invention, and the form and dimensions of the said nose-lever and of the crownstem may vary. The nose-lever may be pivoted on any fixed part of the movement near the winding-pinion except the plate as, for example, on the bridge, potance, block, or the like.

Having now described my invention, 1 claim as new and wish to secure by Letters Patent- In combination in winding and setting mechanism for watches, a winding-stem 7a, a sliding pinion thereon, a winding-pinion q loosely mounted on the stem h, a motion work-wheel s, a lever e for shifting the sliding pinion into engagement with either the winding-wheel or said wheel 8, a spring for normally keeping the sliding pinion in engagement with the winding-pinion q, a two-arm lever 0 having one end engaging with the lever e and its other arm having a nose 9 thereon, said nose lying in close proximity to the upper end of the stem l1 and a sliding crown-stem having its lower end engaging with the stem 71/ and being adapted to be pinched between the said stern and the nose y, when pushed downward so as to depress the other arm of the lever to throw the pinion into engagement With the wheel .9.

In testimony whereof I have signed my nznne to this specification in the presence of two subscribing Witnesses.

CHARLES GLAUSER PERRIN.

Witnesses:

VITAL SCHURCK, JULns CHAPUY. 

